2 years ago

When you solve using the quadratic formula and you get to

Mathematics

1 answer:

kvasek [131]2 years ago

8 0

Answer:

$\boxed{if \: b= - 2 : {b}^{2} = { (- 2)}^{2} = 4}$

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Martha's weight is 75kg. Her weight increased by 3%. What is her new weight?

Brums [2.3K]

Martha’s new weight is 77.25. 3% of 75 is 2.25 and you can find that by multiplying 75 by .03 and adding that number to 75. hope this helps!

3 0

3 years ago

Read 2 more answers

Select the correct answer.

andrew-mc [135]

Answer:

$v=\sqrt{\frac{E}{m}}$

Step-by-step explanation:

The formula is given as:

$E=mv^2$

We need to solve this formula for v, that means that v to one side and let it be solved in terms of the other variables (E and m). First, we isolate v:

$E=mv^2\\\frac{E}{m}=\frac{mv^2}{m}\\\frac{E}{m}=v^2$

To isolate v, and eliminate the "square", we need to take square roots of both sides, that will give us v in terms of the other variables:

$\frac{E}{m}=v^2\\\sqrt{\frac{E}{m}}=\sqrt{v^2}\\\sqrt{\frac{E}{m}}=v$

Putting v to left side (convention), we finally have:

$v=\sqrt{\frac{E}{m}}$

7 0

3 years ago

Abble is going out for pizza with her friends. For $60 total, they can buy p pizzas. Each

miskamm [114]

Answer:

Step-by-step explanation:

if Abble buy pizzas for 60 dollars

60/12=5

he can buy 5 pizzas

p=5

4 0

2 years ago

.what is .02 divied by .30 please dont show the calculator answer

fenix001 [56]

The answer is simplified to 15

5 0

3 years ago

A teacher has 100 pencils in a cup. 16 are more sharp than dull. How many are dull and how many are sharp?

Nadya [2.5K]

X = dull pencils
y = sharp pencils
x + y = 100
y = x + 16 ~~Plug this back into your original x+y equation.
x+x+16=100 ==> 2x = 84 ==> x = 42. Plug this back into the y = equation
y = 42 + 16 ==> y = 58.

42 Dull, 58 sharp.

8 0

2 years ago